Crystal structure of 1,1'-{(pentane-1,5-di-yl)bis[(aza-niumylyl-idene)methanylyl-idene]}bis(naphthalen-2-olate)

Kamel Ouari; Moufida Merzougui; Lydia Karmazin

doi:10.1107/S2056989015014437

Crystal structure of 1,1'-{(pentane-1,5-di-yl)bis[(aza-niumylyl-idene)methanylyl-idene]}bis(naphthalen-2-olate)

Acta Crystallogr E Crystallogr Commun. 2015 Aug 6;71(Pt 9):1010-2. doi: 10.1107/S2056989015014437. eCollection 2015 Sep 1.

Authors

Kamel Ouari¹, Moufida Merzougui¹, Lydia Karmazin²

Affiliations

¹ Laboratoire d'lectrochimie, d'Ingénierie Moléculaire et de Catalyse Redox, Faculty of Technology, University of Ferhat Abbas Sétif-1, 19000 Sétif, Algeria.
² Service de Radiocristallographie, Institut de Chimie UMR 7177 CNRS-Université de Strasbourg, 1 rue Blaise Pascal, BP296/R8, 67008 Strasbourg Cedex, France.

Abstract

The whole mol-ecule of the title compound, C27H26N2O2, is generated by twofold rotational symmetry, with the central C atom of the pentyl chain located on the twofold rotation axis. The compound crystallizes as a bis-zwitterion, and there are two intra-molecular N-H⋯O hydrogen bonds generating S(6) ring motifs. In the crystal, mol-ecules are linked by pairs of C-H⋯O hydrogen bonds, forming ribbons propagating along [001], and enclosing R 2 (2)(22) ring motifs.

Keywords: 1,5-diaminopentane; 2-hydroxy-1-naphthaldehyde; bis-zwitterion; crystal structure; hydrogen bonding; zwitterion.